Neo Sonic Universe
Play as Sonic, Tails, Knuckles, Amy and Shadow and save the world from Evil Tempest. There are 2 gamemodes available: Normal Mode and Battle Mode. Available in English and Portuguese.
http://www.sonicfangameshq.com/file_get.php?sec=1&id=188
Controls: Ctrl: Jump Left and Right:Move

Amy : One Girl Army
After Robotnik hears that Sonic is leaving on a vacation, he sets a new plan in motion by mutating animals into monsters. Looks like its up to Amy to save the day!
http://www.sonicfangameshq.com/file_get.php?sec=1&id=197

Sonic Battle III
A high action, frentic fighter game. You can battle in Tournament Mode or play against a friend in VS. There are a ton of unlockables as well.
http://www.sonicfangameshq.com/file_get.php?sec=1&id=208

Shadic has collected all the epic games. I have collected some of them. But I have not found Sonic Battle III as well. So I am so curious to get it as well as soon. I hope that I will enjoy it as I thought.